Make face with more than 4 edges

 From:  Frenchy Pilou (PILOU)
8572.2 In reply to 8572.1 
If edges are in the same plan and closed : Planar
else
Just Join some edges for have "4 curves" then use Network! ;)

Better if you post your 3dm file!

EDITED: 1 Sep 2017 by PILOU